import axios from 'axios'
import {MessageBox, Message} from 'element-ui'
import store from '@/store'
import {getToken} from '@/utils/auth'

// create an axios instance
const service = axios.create({
  baseURL: process.env.VUE_APP_BASE_API, // url = base url + request url
  // withCredentials: true, // send cookies when cross-domain requests
  timeout: 8000 // request timeout
})

// request interceptor
service.interceptors.request.use(
  config => {
    // do something before request is sent

    if (store.getters.token) {
      // let each request carry token
      // ['Authorization'] is a custom headers key
      // please modify it according to the actual situation
      config.headers['Authorization'] = getToken()
    }
    return config
  },
  error => {
    // do something with request error
    console.log(error) // for debug
    return Promise.reject(error)
  }
)

// response interceptor
service.interceptors.response.use(
  /**
   * If you want to get http information such as headers or status
   * Please return  response => response
   */

  /**
   * Determine the request status by custom code
   * Here is just an example
   * You can also judge the status by HTTP Status Code
   */
  response => {
    const res = response.data

    // if the custom code is not 20000, it is judged as an error.
    if (res.resultCode !== 200) {
      Message({
        message: res.errMsg || 'Error',
        type: 'error',
        duration: 5 * 1000
      })

      // 50008: Illegal token; 50012: Other clients logged in; 50014: Token expired;
      if (res.errCode === 401 || res.resultCode === 50012 || res.resultCode === 50014) {
        // to re-login
        MessageBox.confirm('You have been logged out, you can cancel to stay on this page, or log in again', 'Confirm logout', {
          confirmButtonText: 'Re-Login',
          cancelButtonText: 'Cancel',
          type: 'warning'
        }).then(() => {
          store.dispatch('user/resetToken').then(() => {
            location.reload()
          })
        })
      }
      return Promise.reject(new Error(res.resultMsg || 'Error'))
    } else {
      return res
    }
  },
  error => {
    const whiteList = ['/login']
    console.log('err' + error) // for debug
    if (error.response.status === 401) {
      if (store.getters.token && (whiteList.indexOf(router.currentRoute.name) < 0 || router.currentRoute.name.indexOf('front') >= 0)) {
        // 想要访问不在白名单里的路由
        console.log(error.response.headers)
        if (error.response.headers.authorization) {
          // const config = error.response.config
          // console.log(config.headers.Token)
          // config.headers.Authorization = error.response.headers.authorization
          store.commit('user/SET_TOKEN', error.response.headers.authorization)
          setToken(error.response.headers.authorization)
          // return axios.request(config)
        }
      }
    }
    Message({
      message: error.errMsg,
      type: 'error',
      duration: 5 * 1000
    })
    return Promise.reject(error)
  }
)

export default service
